| Trier to Karlovo | 994.38 mi (1,600.31 km) |
| Trier to Karnobat | 1,085.52 mi (1,746.98 km) |
| Trier to Kavarna | 1,113.61 mi (1,792.19 km) |
| Trier to Kazanlak | 1,019.96 mi (1,641.47 km) |
| Trier to Knezha | 930.60 mi (1,497.65 km) |
| Trier to Kostinbrod | 922.34 mi (1,484.36 km) |
| Trier to Kozloduy | 905.21 mi (1,456.79 km) |
| Trier to Kyustendil | 923.83 mi (1,486.77 km) |
| Trier to Levski | 979.62 mi (1,576.54 km) |
| Trier to Lom | 882.94 mi (1,420.95 km) |
| Trier to Lovech | 971.13 mi (1,562.89 km) |
| Trier to Lukovit | 945.72 mi (1,521.99 km) |
| Trier to Lyaskovets | 1,014.28 mi (1,632.33 km) |
| Trier to Mezdra | 928.45 mi (1,494.20 km) |
| Trier to Momchilgrad | 1,065.69 mi (1,715.06 km) |
